Roller for collecting currents on aerial conductors



1. mssnun. ROLLER FOR COLLECTING CURRERTS 0] AERIAL GOIDLICTOIS. APPLICATION lflLED AUG- I929.

Patented LL91. 15, 1921.

JULES JASSAUD, OF NEUILLY-PLAISilNCE, FRANCE.

ROLLER COLLECTING CUR-BEETS O15, r'iEBIAL CONDUCTORS.

Specification of Letters Patent.

Patented iY-iar. 15, 1921.

Application filed August 17, 1920. Serial No; 404,149.

To aZZ whom it may concern:

Be it known that 1, Jonas JASSAUD, a citizen of the Republic of France, and a res1 dent oi Neuilly-Plaisance, France, (post oihce address Boulevard Gallieni, 17,) have invented new and useful improvements n liiollers for Collecting Currents on Aerial Conductors, which improvements are fully setiorth in the following specification.

In the working of electric tramways or railways with overhead lines, the current collector generally consists of a trolley revolving upon a spindle fixed upon the trolley pole, the trolley being grooved for the purpose of making contact with the trolley wire on which it runs.

As a result of the increased traveling speed and the weight or". the vehicles to be moved, the peripheral speed of the trolley is greatly increasedconcurrently with the increased intensity of the current to be collected. This causes rapid wear and tear of the running parts, and puts the contact trolleys prematurely out 01" service.

The present invention consists in improvements in the construction of currentcollecting trolleys. I

The object of these improvements is to automatically counteract the play between the parts in frictional contact, and at the same time insure perfect contact for the passage of the current. lVith this object in. view the trolley instead of revolving directly on a fixed spindle mounted upon the trolley pole, is journaled upon two truncated cones which are mounted on said spindle, so as to be capable of sliding longitudinally on the same under the action of spring operating between said cones. The cones are mounted upon the spindle of the trolley pole with their larger bases facing each other, so that under the action of the interposed spring they can counteract the play between their external conical surfaces and the corresponding sliding surfaces of the trolley.

The accompanying drawings show by way of example a way of carrying out the invention:

Figure 1 is a vertical section of the trolley collector according to the present invention.

Fig. 2 is a corresponding side view.

On the spindle a mounted upon the trolley pole or upon any existing support, there are mounted two truncated cones b with their larger bases facing each other. These cones Z) are immobilized against any angular displacement by a pin cl mounted upon the fixed spindle a and engaging in the slot 0. The cones b are free to move longitudinally in relation to the fixed spindle a, under the action of a spring 6 mounted between them. The trolley f is bored out in such way as to present two tapered surfaces.

Under the pressure of the line wire lying in the groove of the trolley and by reason of the movement of the vehicle, the trolley f rotates in the usual manner and consequently revolves around the two fixed cones Z),- the friction occurring between the inner and outer conical contact surfaces which coincide with their apices. When the con tact surfaces wear down, the wear is automatically compensated by the longitudinal displacements of thecones I) under the action of the interposed spring 6, the trolley 7 remaining always perfectly centered upon the aris around which it revolves.

This suppression of play by means of the cones Z2 forming a close fitting hearing, will prevent any loss of lubricant and assure a permanent contact, for the passage of the electric current, between the various members comprising the trolley.

What I claim and desire to secure by Le"- ters Patent of the United States is:

1. In a current collecting trolley for overhead lines for electric railways and tramways, means adapted to automatically counteract the play between those parts of the trolley which are in frictional contact and to insure perfect electrical contact for the passage of the current, comprising a stationary spindle, two truncated cones facing each other with their larger bases, immobilized upon said spindle but adapted to slide in a direction parallel to the axis of said spindle. aspring inserted between said cones adapted to longitudinally displace said cones, a trolley adapted to revolve around the conical sides of said cones provided with a peripheral groove for the overhead wire, and internally bored out so as to provide sliding surfaces corresponding to the conical surfaces of said cones.

2. A current collecting trolley for overhead lines for electric railways and tramways comprising a trolley wheel provided with a groove for the overhead wire and adapted to revolve around the external conic-a1 surfaces of two sleeves having the shape of two truncated cones, said sleeves 'a spring inserted between said cones and tending to separate them, thus automatically counteracting any play occurring between the sliding surfaces of the trolley wheel and the sleeves.

- 3. Truncated cone bushes for use in @011- nection with current collecting trolleys for overhead lines for electric railways and 'tramways, comprising two truncated cones facing each other with their larger bases, immobilized upona spindle fixed to the trolley pole, but adapted to slide in a direction parallel to the axis of said spindle under the action of a spring; inserted between said surfaces. s

In testimony whereof I have signed this specification in the presence of two subscribing witnesses. JULES JASSAUD.

\Vitnesses:

' ALPHONSE NIooLAs,

CLEMENT S; EDWARDS. 

